[2] HILKERT J M. Inertially stabilized platform technology concepts and principles[J]. Control Systems, IEEE, 2008, 28(1): 26-46.
[4] LI R H, LI T S, LI Q. Application of active disturbance rejection control in ship course and track control[C]//Proceedings of the 30th Chinese Control Conference (CCC), IEEE, 2011: 6310-6314.
[5] YANG J, LI S, CHEN W H. Nonlinear disturbance obser-ver-based control for multi-input multi-output nonlinear systems subject to mismatching condition[J]. International Journal of Control, 2012, 85(8): 1071-1082.
[9] CHINTHAKA M K C D, HARSHA A M, ABEYKOON S. Disturbance observer based friction compensator for a DC motor[C]//The 11th International Conference on Electrical Engineering/Electronics, Computer, Telecommunications and Information Technology (ECTI-CON), IEEE, 2014: 1-6.